An intelligent motor used in a vacuum environment and a control method thereof

Abstract

The present invention relates to the field of motor technology, and in particular to an intelligent motor used in a vacuum environment and a control method thereof. By adding an outer shell to a traditional motor, the outer shell, inner shell, front cover and rear cover together form a closed annular cavity for connecting to an external gas circulation loop or liquid circulation loop to achieve temperature regulation of the motor, and the traditional motor is designed to be a fully enclosed structure, specifically: the front cover is sealed and connected to the opening edge of the inner shell and the outer shell at one end, the rear cover is sealed and connected to the opening edge of the inner shell and the outer shell at the other end, and the rotating shaft is passed through the through hole through a mechanical seal; according to the above method, it is ensured that the motor is not affected by the internal and external pressure difference. Therefore, the intelligent motor used in a vacuum environment provided by the present invention can regulate the temperature of the motor in a vacuum environment and prevent lubricating oil from overflowing at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to an intelligent motor used in a vacuum environment and a control method thereof. Background Art

[0002] The motor is one of the most commonly used devices in the field of electromechanics, but motors specifically used in vacuum are not common. Under vacuum conditions, it is difficult for the motor to dissipate heat (it cannot dissipate heat through air conduction). At the same time, due to the different internal and external pressures of the motor, that is, when the external pressure of the motor is greater than the internal pressure, such as the inside of the motor is a vacuum environment and the outside of the motor is a natural environment, the air outside the motor will enter the motor, thereby affecting the vacuum inside the motor; when the internal pressure of the motor is greater than the external pressure, such as the outside of the motor is a vacuum environment and the inside of the motor is a natural environment, the air inside the motor will escape and carry a small amount of lubricating oil on the motor bearings, thereby affecting the vacuum outside the motor and the motor performance; therefore, under the above conditions, the motor cannot work stably for a long time, and the service life of the motor is also shortened. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an intelligent motor used in a vacuum environment and a control method thereof, which can adjust the temperature of the motor in the vacuum environment and prevent lubricating oil from overflowing.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0005] A smart motor used in a vacuum environment comprises a front end cover, an inner shell, an outer shell, a rear end cover and a rotating shaft; the inner shell and the outer shell are both cylindrical and have openings at both ends of the corresponding cylinders, the outer shell is sleeved on the outside of the inner shell and the outer shell is coaxially arranged, the front end cover is respectively sealed and connected to the opening edges of the inner shell and the outer shell at one end, the rear end cover is respectively sealed and connected to the opening edges of the inner shell and the outer shell at the other end, a through hole is provided at the center of the front end cover for the rotating shaft to pass through, and the rotating shaft is penetrated in the through hole by a mechanical seal; the outer shell, the inner shell, the front end cover and the rear end cover jointly form a closed annular cavity, the outer shell is provided with an inlet end and an outlet end, the inlet end and the outlet end are both connected to the annular cavity, and the inlet end and the outlet end are both connected to an external gas circulation loop or a liquid circulation loop.

[0006] Another technical solution adopted by the present invention is:

[0007] A control method for the above-mentioned intelligent motor used in a vacuum environment comprises the following steps:

[0008] S1. Obtain a first temperature value on the surface of the inner shell, and determine whether the first temperature value exceeds a first preset threshold range;

[0009] S2. If yes, obtain a second temperature value on the surface of the outer shell, and control the corresponding gas circulation loop or liquid circulation loop to be connected to the inlet end according to the second temperature value.

[0010] The beneficial effects of the present invention are:

[0011] The present invention provides an intelligent motor for use in a vacuum environment. An outer shell is added to a traditional motor, so that the outer shell, inner shell, front cover and rear cover together form a closed annular cavity for connecting to an external gas circulation loop or liquid circulation loop to achieve temperature regulation of the motor, and the traditional motor is designed to be a fully enclosed structure, specifically: the front cover is sealed and connected to the opening edges of the inner shell and the outer shell at one end, respectively, and the rear cover is sealed and connected to the opening edges of the inner shell and the outer shell at the other end, respectively, and a through hole for the rotating shaft to pass through is provided at the center of the front cover, and the rotating shaft is penetrated in the through hole through a mechanical seal; the fully enclosed structure is achieved according to the above method to ensure that the motor is not affected by the internal and external pressure difference. Therefore, the intelligent motor for use in a vacuum environment provided by the present invention can regulate the temperature of the motor in a vacuum environment and prevent lubricating oil from overflowing at the same time.

[0012] Furthermore, the present invention also provides a control method for the above-mentioned intelligent motor used in a vacuum environment, which determines whether temperature adjustment is required by collecting a first temperature value on the surface of the inner shell. When the first temperature value exceeds a first preset threshold range, it indicates that the motor temperature needs to be adjusted, and then a second temperature value on the surface of the outer shell is obtained, that is, the most suitable temperature adjustment method is selected according to the external ambient temperature of the motor. This not only improves the overall intelligence level, but also facilitates the rapid adjustment of the motor temperature so that the motor can be restored to its optimal working environment and thus maximize its performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A cross-sectional view of an intelligent motor used in a vacuum environment according to the present invention;

[0014] Figure 2 A flowchart of a control method for an intelligent motor used in a vacuum environment according to the present invention;

[0015] Description of labels:

[0016] 1. Front cover; 2. Inner shell; 3. Outer shell; 4. Rear cover; 5. Rotating shaft; 6. Through hole; 7. Annular cavity; 8. Inlet end; 9. Outlet end; 10. First thermometer; 11. Second thermometer; 12. Rotor; 13. Stator; 14. Bearing. DETAILED DESCRIPTION

[0017] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0018] Please refer to Figure 1 , the present invention provides an intelligent motor for use in a vacuum environment, comprising a front end cover, an inner shell, an outer shell, a rear end cover and a rotating shaft; the inner shell and the outer shell are both cylindrical and have openings at both ends of the corresponding cylinders, the outer shell is sleeved on the outside of the inner shell and the outer shell is coaxially arranged with the inner shell, the front end cover is respectively sealed and connected to the opening edges of the inner shell and the outer shell at one end, the rear end cover is respectively sealed and connected to the opening edges of the inner shell and the outer shell at the other end, a through hole is provided at the center position of the front end cover for the rotating shaft to pass through, and the rotating shaft is penetrated into the through hole through a mechanical seal; the outer shell, the inner shell, the front end cover and the rear end cover jointly form a closed annular cavity, the outer shell is provided with an inlet end and an outlet end, the inlet end and the outlet end are both connected to the annular cavity, and the inlet end and the outlet end are both connected to an external gas circulation loop or a liquid circulation loop.

[0019] From the above description, it can be seen that the beneficial effects of the present invention are:

[0020] The present invention provides an intelligent motor for use in a vacuum environment. An outer shell is added to a traditional motor, so that the outer shell, inner shell, front cover and rear cover together form a closed annular cavity for connecting to an external gas circulation loop or liquid circulation loop to achieve temperature regulation of the motor, and the traditional motor is designed to be a fully enclosed structure, specifically: the front cover is sealed and connected to the opening edges of the inner shell and the outer shell at one end, respectively, and the rear cover is sealed and connected to the opening edges of the inner shell and the outer shell at the other end, respectively, and a through hole for the rotating shaft to pass through is provided at the center of the front cover, and the rotating shaft is penetrated in the through hole through a mechanical seal; the fully enclosed structure is achieved according to the above method to ensure that the motor is not affected by the internal and external pressure difference. Therefore, the intelligent motor for use in a vacuum environment provided by the present invention can regulate the temperature of the motor in a vacuum environment and prevent lubricating oil from overflowing at the same time.

[0021] Furthermore, the gas in the gas circulation loop is water-free hot gas, and the liquid in the liquid circulation loop is water, oil or alcohol.

[0022] From the above description, it can be seen that the use of the above media can meet actual needs.

[0023] Furthermore, the rear end cover is provided with a mounting hole, and a power terminal is embedded in the mounting hole. One end of the power terminal is electrically connected to the winding arranged inside the inner shell, and the other end of the power terminal is used to adapt to an external plug or socket.

[0024] Furthermore, the power terminal includes a lead, an electrical terminal and a columnar injection molded body, one end of the lead and one end of the electrical terminal are respectively embedded in the injection molded body and welded to each other, an annular groove is provided on the side of the injection molded body that matches the mounting hole, an annular sealing ring is embedded in the annular groove, and the annular sealing ring is in conflict with the mounting hole.

[0025] As can be seen from the above description, the sealing effect of the power terminal is achieved through the above structure. The lead wire and the power terminal are integrally formed with the injection molding body through the injection molding process. Specifically, the lead wire and the power terminal are first welded, and then the power terminal is formed by injection molding. Therefore, the inside of the power terminal has sealing performance, and the outside of the power terminal is in contact with the mounting hole on the rear end cover through the annular sealing ring to achieve a sealing effect, and the annular groove plays a role in limiting the annular sealing ring to ensure the stability of its sealing.

[0026] Furthermore, it also includes a first thermometer, a second thermometer, a processor and an electronic switch valve; the first thermometer is arranged on the surface of the inner shell, the second thermometer is arranged on the surface of the outer shell, and the electronic switch valve is arranged on the passage between the inlet end and the gas circulation loop or the liquid circulation loop, and the first thermometer, the second thermometer and the electronic switch valve are electrically connected to the processor respectively.

[0027] From the above description, it can be seen that the first temperature value on the surface of the inner shell is collected by the first thermometer to determine whether temperature adjustment is required. If the first temperature value exceeds the first preset threshold range, it means that the motor temperature needs to be adjusted, and the second temperature value on the surface of the outer shell is obtained by the second thermometer, that is, the most suitable temperature adjustment method is selected according to the external ambient temperature of the motor. After analysis, the processor sends an instruction to the corresponding electronic switch valve to open, thereby realizing the opening of the passage between the inlet end and the gas circulation loop or the liquid circulation loop. It should be noted that a memory is integrated in the processor, and the memory stores the corresponding relationship between the second temperature value and the corresponding electronic switch valve, that is, a mapping table. Specifically: if the second temperature value is not less than -200℃ and greater than -80℃, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas of 80℃~120℃; if the second temperature value is not less than -80℃ and not greater than 0℃, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas of 50℃~80℃; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is alcohol; if the second temperature value is greater than 0℃ and not greater than 40℃, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is air at normal temperature; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is water at normal temperature; if the second temperature value is greater than 40℃ and not greater than 200℃, the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is cooling water or oil.

[0028] See also Figure 2 The present invention also provides a control method for the above-mentioned intelligent motor used in a vacuum environment, comprising the following steps:

[0029] S1. Obtain a first temperature value on the surface of the inner shell, and determine whether the first temperature value exceeds a first preset threshold range;

[0030] S2. If yes, obtain a second temperature value on the surface of the outer shell, and control the corresponding gas circulation loop or liquid circulation loop to be connected to the inlet end according to the second temperature value.

[0031] From the above description, it can be seen that the beneficial effects of the present invention are:

[0032] By collecting the first temperature value on the surface of the inner shell, it is determined whether temperature adjustment is required. When the first temperature value exceeds the first preset threshold range, it indicates that the motor temperature needs to be adjusted, and then the second temperature value on the surface of the outer shell is obtained, that is, the most suitable temperature adjustment method is selected according to the external ambient temperature of the motor. This not only improves the overall intelligence level, but also facilitates the rapid adjustment of the motor temperature so that the motor can be restored to its optimal working environment and thus maximize its performance.

[0033] Furthermore, before step S1, the method further includes:

[0034] S0. Determine whether the intelligent motor is in operation. If so, proceed to step S1.

[0035] From the above description, it can be seen that the temperature is not collected at any time, nor is it collected as soon as the machine is powered on. Instead, the temperature value is collected only when the intelligent motor is in operation, that is, when the stator and rotor start working, so as to optimize system resources. Of course, it is also possible to enter step S0 after a period of time after power-on, which can further optimize system resources.

[0036] Furthermore, the first preset threshold range is 0°C to 70°C.

[0037] From the above description, it can be seen that the temperature adjustment process is performed only when the internal temperature of the motor is lower than 0°C or higher than 70°C, otherwise no process is performed.

[0038] Furthermore, in step S2, the corresponding gas circulation loop or liquid circulation loop is controlled to be connected to the inlet end according to the second temperature value, specifically:

[0039] If the second temperature value is not less than -200°C and greater than -80°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas at 80°C to 120°C;

[0040] If the second temperature value is not less than -80°C and not greater than 0°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas at 50°C to 80°C; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is alcohol;

[0041] If the second temperature value is greater than 0°C and not greater than 40°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is air at room temperature; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is water at room temperature;

[0042] If the second temperature value is greater than 40° C. and not greater than 200° C., the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is cooling water or oil.

[0043] From the above description, it can be seen that according to the range of the second temperature value, the corresponding operation is performed to achieve the most suitable temperature adjustment method. In addition, it should be noted that this solution only considers the external environment temperature of -200℃~200℃, which is sufficient to meet the actual needs of the current market.

[0044] Furthermore, after step S2, the following steps are further included:

[0045] S3. Determine whether the current first temperature value is within a second preset threshold range. If so, control the gas circulation loop or the liquid circulation loop to be cut off from the inlet end; the second preset threshold range is 50°C to 70°C.

[0046] From the above description, it can be seen that when the internal temperature of the motor reaches the range of 50°C to 70°C, the temperature adjustment operation is stopped.

[0047] Please refer to Figure 1 , Embodiment 1 of the present invention is:

[0048] An intelligent motor used in a vacuum environment comprises a front cover 1, an inner shell 2, an outer shell 3, a rear cover 4 and a rotating shaft 5; the inner shell 2 and the outer shell 3 are both cylindrical and have openings at both ends of the corresponding cylinders, wherein the radius of the outer shell 3 is greater than the radius of the inner shell 2. The outer shell 3 is sleeved outside the inner shell 2 and the outer shell 3 is coaxially arranged with the inner shell 2, the front cover 1 is respectively sealed and connected with the opening edges of the inner shell 2 and the outer shell 3 at one end, the rear cover 4 is respectively sealed and connected with the opening edges of the inner shell 2 and the outer shell 3 at the other end, a through hole 6 is provided at the center of the front cover 1 for the rotating shaft 5 to pass through, and the rotating shaft 5 is penetrated in the through hole 6 through a mechanical seal; the outer shell, the inner shell, the front cover and the rear cover together form a closed annular cavity 7, the outer shell 3 is provided with an inlet end 8 and an outlet end 9, the inlet end 8 and the outlet end 9 are both connected with the annular cavity 7, and the inlet end 8 and the outlet end 9 are both connected with an external gas circulation loop or a liquid circulation loop. The above-mentioned sealed connection is achieved by using a sealing ring.

[0049] A rotor 12 is arranged on the rotating shaft 5 , a stator 13 matching the rotor is arranged on the inner side wall of the inner shell, and the rotating shaft is installed through a bearing 14 .

[0050] In this embodiment, the gas in the gas circulation loop is water-free hot gas, and the liquid in the liquid circulation loop is water, oil or alcohol.

[0051] In this embodiment, the rear cover is provided with a mounting hole, and a power terminal is embedded in the mounting hole. One end of the power terminal is electrically connected to the winding disposed inside the inner shell, and the other end of the power terminal is used to adapt to an external plug or socket. Specifically, the power terminal includes a lead, an electrical terminal, and a columnar injection molding body. One end of the lead and one end of the electrical terminal are respectively embedded in the injection molding body and welded to each other. An annular groove is provided on the side of the injection molding body that matches the mounting hole, and an annular sealing ring is embedded in the annular groove, and the annular sealing ring conflicts with the mounting hole.

[0052] It should be noted that the lead wires and the power terminals are integrally formed with the injection molding body through the injection molding process. Specifically, the lead wires and the power terminals are welded first, and then injection molding is performed to form the power terminal. Therefore, the inside of the terminal is sealed, and the outside of the terminal contacts the mounting hole on the rear cover through the annular sealing ring to achieve a sealing effect. The annular groove serves to limit the annular sealing ring to ensure the stability of the seal. Figure 1 Not shown in FIG.

[0053] Embodiment 2 of the present invention is:

[0054] In order to improve the intelligence level, the above embodiment 1 is further improved, specifically including a first thermometer 10, a second thermometer 11, a processor and an electronic switch valve; the first thermometer 10 is arranged on the surface of the inner shell 2, the second thermometer 11 is arranged on the surface of the outer shell 3, the electronic switch valve is arranged on the passage between the inlet end and the gas circulation loop or the liquid circulation loop, and the first thermometer, the second thermometer and the electronic switch valve are electrically connected to the processor respectively. The electronic switch valve and the processor are Figure 1 Not shown in FIG.

[0055] The first temperature value on the surface of the inner shell is collected by the first thermometer to determine whether temperature adjustment is required. If the first temperature value exceeds the first preset threshold range, it indicates that the motor temperature needs to be adjusted, and the second temperature value on the surface of the outer shell is obtained by the second thermometer, that is, the most suitable temperature adjustment method is selected according to the external ambient temperature of the motor. After analysis, the processor sends an instruction to the corresponding electronic switch valve to open, thereby realizing the opening of the passage between the inlet end and the gas circulation loop or the liquid circulation loop. It should be noted that a memory is integrated in the processor, and the memory stores the corresponding relationship between the second temperature value and the corresponding electronic switch valve, that is, a mapping table. Specifically: if the second temperature value is not less than -200℃ and greater than -80℃, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas of 80℃~120℃; if the second temperature value is not less than -80℃ and not greater than 0℃, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas of 50℃~80℃; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is alcohol; if the second temperature value is greater than 0℃ and not greater than 40℃, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is air at normal temperature; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is water at normal temperature; if the second temperature value is greater than 40℃ and not greater than 200℃, the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is cooling water or oil.

[0056] Please refer to Figure 2 , Embodiment 3 of the present invention is:

[0057] The present invention provides a control method for the above-mentioned intelligent motor used in a vacuum environment, comprising the following steps:

[0058] S0. Determine whether the intelligent motor is in operation. If so, proceed to step S1.

[0059] S1. Obtain a first temperature value on the surface of the inner shell, and determine whether the first temperature value exceeds a first preset threshold range; the first preset threshold range is 0° C. to 70° C.

[0060] S2. If yes, obtain a second temperature value on the surface of the outer shell, and control the corresponding gas circulation loop or liquid circulation loop to be connected to the inlet end according to the second temperature value.

[0061] In step S2, the corresponding gas circulation loop or liquid circulation loop is controlled to be connected to the inlet end according to the second temperature value, specifically:

[0062] If the second temperature value is not less than -200°C and greater than -80°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas at 80°C to 120°C;

[0063] If the second temperature value is not less than -80°C and not greater than 0°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas at 50°C to 80°C; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is alcohol;

[0064] If the second temperature value is greater than 0°C and not greater than 40°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is air at room temperature; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is water at room temperature;

[0065] If the second temperature value is greater than 40° C. and not greater than 200° C., the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is cooling water or oil.

[0066] From the above description, it can be seen that the temperature is not collected at any time, nor is it collected as soon as the machine is powered on. Instead, the temperature value is collected only when the intelligent motor is in operation, that is, after the stator and rotor start working, so as to optimize system resources. Of course, it is also possible to enter step S0 after a period of time after power-on, which can further optimize system resources.

[0067] It should also be noted that this solution only considers the external environment temperature of -200℃~200℃, which is sufficient to meet the actual needs of the current market.

[0068] Optionally, after step S2, the following steps are further included:

[0069] S3, judging whether the current first temperature value is within the second preset threshold range, if so, controlling the gas circulation loop or the liquid circulation loop to be cut off from the inlet end; the second preset threshold range is 50°C to 70°C. When the internal temperature of the motor reaches the range of 50°C to 70°C, the temperature adjustment operation is stopped.

[0070] In summary, the present invention provides an intelligent motor for use in a vacuum environment. An outer shell is added to a traditional motor, so that the outer shell, inner shell, front cover and rear cover together form a closed annular cavity for connecting to an external gas circulation loop or liquid circulation loop to achieve temperature regulation of the motor, and the traditional motor is designed into a fully enclosed structure, specifically: the front cover is sealed and connected to the opening edges of the inner shell and the outer shell at one end, respectively, and the rear cover is sealed and connected to the opening edges of the inner shell and the outer shell at the other end, respectively, and a through hole for the rotating shaft to pass through is provided at the center of the front cover, and the rotating shaft is penetrated in the through hole through a mechanical seal; the fully enclosed structure is realized according to the above method to ensure that the motor is not affected by the internal and external pressure difference. Therefore, the present invention provides an intelligent motor for use in a vacuum environment. It can regulate the temperature of the motor in a vacuum environment and prevent lubricating oil from overflowing at the same time. Furthermore, the present invention also provides a control method for the above-mentioned intelligent motor used in a vacuum environment, which determines whether temperature adjustment is required by collecting a first temperature value on the surface of the inner shell. When the first temperature value exceeds a first preset threshold range, it indicates that the motor temperature needs to be adjusted, and then a second temperature value on the surface of the outer shell is obtained, that is, the most suitable temperature adjustment method is selected according to the external ambient temperature of the motor. This not only improves the overall intelligence level, but also facilitates the rapid adjustment of the motor temperature so that the motor can be restored to its optimal working environment and thus maximize its performance.

[0071] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An intelligent motor used in a vacuum environment, characterized in that: It comprises a front end cover, an inner shell, an outer shell, a rear end cover and a rotating shaft; the inner shell and the outer shell are both cylindrical and have openings at both ends of the corresponding cylinders; the outer shell is sleeved on the outside of the inner shell and the outer shell is coaxially arranged with the inner shell; the front end cover is respectively sealed and connected with the opening edges of the inner shell and the outer shell at one end; the rear end cover is respectively sealed and connected with the opening edges of the inner shell and the outer shell at the other end; a through hole is provided at the center of the front end cover for the rotating shaft to pass through, and the rotating shaft is penetrated in the through hole through a mechanical seal; the outer shell, the inner shell, the front end cover and the rear end cover jointly form a closed annular cavity; the outer shell is provided with an inlet end and an outlet end, the inlet end and the outlet end are both communicated with the annular cavity, and the inlet end and the outlet end are both connected with an external gas circulation loop or a liquid circulation loop; The rotating shaft is provided with a rotor, and the inner wall of the inner shell is provided with a stator adapted to the rotor; The rear end cover is provided with a mounting hole, and a power terminal is embedded in the mounting hole. One end of the power terminal is electrically connected to the winding arranged inside the inner shell, and the other end of the power terminal is used to adapt to an external plug or socket; The power terminal includes a lead, an electrical terminal and a columnar injection molded body. One end of the lead and one end of the electrical terminal are respectively embedded in the injection molded body and welded to each other. An annular groove is provided on the side of the injection molded body that matches the mounting hole. An annular sealing ring is embedded in the annular groove, and the annular sealing ring is in conflict with the mounting hole.

2. The intelligent motor used in a vacuum environment according to claim 1, characterized in that: The gas in the gas circulation loop is water-free hot gas, and the liquid in the liquid circulation loop is water, oil or alcohol.

3. The intelligent motor used in a vacuum environment according to claim 1, characterized in that: It also includes a first thermometer, a second thermometer, a processor and an electronic switch valve; the first thermometer is arranged on the surface of the inner shell, the second thermometer is arranged on the surface of the outer shell, the electronic switch valve is arranged on the passage between the inlet end and the gas circulation loop or the liquid circulation loop, and the first thermometer, the second thermometer and the electronic switch valve are electrically connected to the processor respectively.

4. A control method for an intelligent motor used in a vacuum environment according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Obtain a first temperature value on the surface of the inner shell, and determine whether the first temperature value exceeds a first preset threshold range; S2. If yes, obtain a second temperature value on the surface of the outer shell, and control the corresponding gas circulation loop or liquid circulation loop to be connected to the inlet end according to the second temperature value.

5. The control method of a smart motor used in a vacuum environment according to claim 4, characterized in that: Before step S1, the method further includes: S0. Determine whether the intelligent motor is in operation. If so, proceed to step S1.

6. The control method of a smart motor used in a vacuum environment according to claim 4, characterized in that: The first preset threshold range is 0°C to 70°C.

7. The control method of a smart motor used in a vacuum environment according to claim 4, characterized in that: In step S2, the corresponding gas circulation loop or liquid circulation loop is controlled to be connected to the inlet end according to the second temperature value, specifically: If the second temperature value is not less than -200°C and greater than -80°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas at 80°C to 120°C; If the second temperature value is not less than -80°C and not greater than 0°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is hot gas at 50°C to 80°C; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is alcohol; If the second temperature value is greater than 0°C and not greater than 40°C, the gas circulation loop is controlled to be connected to the inlet end, and the gas in the gas circulation loop is air at room temperature; or the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is water at room temperature; If the second temperature value is greater than 40° C. and not greater than 200° C., the liquid circulation loop is controlled to be connected to the inlet end, and the liquid in the liquid circulation loop is cooling water or oil.

8. The control method of a smart motor used in a vacuum environment according to claim 4, characterized in that: After step S2, the following steps are also included: S3. Determine whether the current first temperature value is within a second preset threshold range. If so, control the gas circulation loop or the liquid circulation loop to be cut off from the inlet end; the second preset threshold range is 50°C to 70°C.

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